Biodegradable resin composition and preparation process thereof
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United States of America Patent
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Sep 5, 2000
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N/A
app pub date -
Aug 6, 1999
filing date -
Aug 7, 1998
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Expired
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Abstract
A process for preparing a biodegradable resin composition, comprising: providing a reaction mixture comprising at least one hydroxycarboxylic acid and, as a polymerization catalyst, a monoorganotin derivative; heating and stirring the reaction mixture, wherein the heating and stirring step is carried out under a reduced pressure to cause condensation polymerization or carried out in an organic solvent to cause azeotropic dehydrating polymerization. Also disclosed in a biodegradable resin composition prepared by the process.
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